US2503559A - Electrical terminal - Google Patents

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Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/02—Soldered or welded connections
  • H01R4/027—Soldered or welded connections comprising means for positioning or holding the parts to be soldered or welded
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
  • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
  • H01R11/12—End pieces terminating in an eye, hook, or fork
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
  • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
  • H01R11/22—End pieces terminating in a spring clip

Definitions

• This invention relates in general to electrical connectors and is particularly adapted to relay electrical terminals.
• the present most commonly used type of relay spring contact terminal takes the form of an end extension of the spring contact, having a hole punched therein.
• the method of connecting an insulated wire to this terminal is, in short, to strip the insulation from this wire for about to back from the end, to thread the bare end through the hole in the terminal, to twist the free end of the wire back over the end of the terminal, to hold the wire while soldering the wrapped wire to the terminal and to snip oii the excess free bare wire beyond the soldered connection.
• the old type terminal By using the old type terminal a person, in order to make successive connections and disconnections of the same wire, is confronted with an ever'shorter wire due to the shipping operations and with an ever twisted and deformed end. Both of these conditions are conducive to making these successive operations more difficult.
• the shipping operation allows bits of wire to fly into adjoining apparatus as a potential threat to breakdown of that apparatus.
• the new terminal described herein requires no bending or twisting of the conductor and no shipping of loose ends and so not only prevents waste, but permits almost unlimited successive connecting and disconnecting of the same wire without deforming the wire or jeopardizing the operation of adjacent apparatus.
• the elimination of the snipping operation allows elimination of one tool required for the former type operation.
• Fig. 1 shows an oblique view of the terminal with no attached conductors
• Fig. 2 illustrates one insulated conductor in proper connection to the terminal, showing a soldered connection of the conductor to the body of the terminal;
• Fig. 3 is a side view of the illustration in Fig. 2;
• Fig. 4 indicates the type of cuts necessary to be made in a blank in order to form such a terminal as illustrated in Fig. 1;
• Fig. 5 is an end view of Fig. 3 along the direction A-A, with the conductor removed, showing the general nature of the cross-section of the terminal;
• Fig. 6 solid lines, indicates the result of the first required folding operation in making the terminal of Fig. 1 from the cut-out blank of Fig. 4, the dotted lines indicating the bending of the finger portions, which may be done at the time of punching out the blank, as in Fig. 4;
• Fig. '7 shows the invention employed in its preferred manner as an integral part of a relay spring contact.
• strip portion I having ears 2 and 3, which ears have end extensions 4 and 5, respectively, which extensions are substantially parallel to the strip portion and separated therefrom laterally by respective slots 6 and 1 whose bottoms 8 and 9 each form a side of one of the ears 2 and 3.
• Portions HI and, arecut from eitherof theoutside edges of theiearextensionsi'4 andii, as indicated by the indents l2 and L3; respectively.
• Two other ears l4 and I5 are formed respectively, when slots l6 and I! of strip material l are cut, the bottoms l8 and Hi of which Slot/S lls anal-:1. H are separated by a greater distance than the width of the strip portion 'A cut-o'ut.
• I portion 20 provides edges 2
• Fig. 5 illustrates the cross-sections obtained when the ears ,2 and 3 are Wrapped to meet' 'above I the plane of the strip portion and when-the: ears I4 and I5 are wrapped in the same sense to meet above the plane of the strip portion and in the sameplane as the 'ears Z'and 3:
• Thiscross section -is shown and -preferred*as somewhat tubularyapproaching a rectangle:
• Fig-6 in solid linesyis aside view'of the result of the aforementioned wrapping operation 'I-Iere "2 it is noted that the edges 2
• the 'ears l4 and 2- are shown-in the sameplaneabove-the plane-of the stripporti'on withthe end'--extensions 4- and'S alsoin -the-'same" planeas the ear 2, ears
• the declined-portion ofend'extem sion 5 of ear 4 is hidden from view' by the portior'r'" 24.
• These-fingers '40 and-2'4 may; as previously mentioned, be bent'when'theblank'of Figi'4 is cutw 4 Fig.
• FIG. 1 is an oblique view of a completed term inal;--"as previously described.” *In this disclosure the ears l4 and I5, andZand '3- do not-rneet but retain separations as 28 and 29, respectively. A firmer terminal will-'e'xist-if the -separations 283 and '29 do not exist. *The portion's'd'fi and-1
• Figs. 2 and 3 an insulated conductor 33 (which may have a' cross-section of anyshapeVfio has been'stripped of its insulation34 backto'a' point 35, sufiicient'to allowtheend36 oi? 'oon ductor 33 toextend'beyondtlie"edge 3
• the end 36 of the conductor 33 is inserted into the tubular portion at the slanting end, so as to extend to the left and beyond the edge 3
• the portion40 will be strong enough in resilient tension to hold the conductor 33 in position while condilemmas soldered to the body of the terminal at 31, but willnot be so strong as to deform or injure the' conductof 'while being inserted or removed ⁇ Fig.
• a flat strip portion comprising an end portion having two ears, each ear located on a lateral edge of said end portion and located laterally opposite the other of said ears, each of said ears forming in cooperation with the ear end of said strip portion a cylindrical cross-section of said strip portion comprising two substantially parallel fiat sides connected by a curved side, the lateral edges of said ears located adjacent to each other, each of said ears including a flat resili nt finger portion extending as a cantilever beyond the said cylindrical section and declined toward the said strip portion, the said declined end of said finger portion including a sharp edge for gripping a conductor extending into and through said cylindrical section and between said declined end of said finger portion and said strip portion, the declined end of said finger portion being separated normally from the said strip portion by a distance less than the diameter of said conductor, and each of said ears having an aperture therein opening on an edge of said ear other than an end edge thereof, by reason of which aperture said conductor may be soldered, or other similar process, to the said cylindrical section.
• a fiat strip portion comprising an end portion having two ears, each ear located on a lateral edge of said end portion and located laterally opposite the other of said ears, each of said ears forming in cooperation with the ear end of said strip portion a cylindrical cross-section of said strip portion comprising two substantially parallel fiat sides connected by a curved side, the
• each of said ears ineluding a flat resilient finger portion extending as a cantilever beyond the said cylindrical section and declined toward the said strip portion, the said declined end of said finger portion including a sharp edge for gripping a conductor extending into and through said cylindrical section and between said declined end of said finger portion and said strip portion, the declined end of said finger portion being separated normally from the said strip portion by a distance less than the diameter of said conductor, and each of said ears having an aperture therein opening on an edge of said ear other than an end edge thereof, by reason of which aperture said con ductor may be soldered, or other similar process, to the said cylindrical section.

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• Coupling Device And Connection With Printed Circuit (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24673464

Family Applications (1)

Country Status (1)

Cited By (21)

Citations (6)

• 1946
  • 1946-05-01 US US666259A patent/US2503559A/en not_active Expired - Lifetime

Patent Citations (6)

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